Curtain window



oct. 4,1927. 1,643,942.

R. CALPIN CURTAIN WINDOW Filed Avril 14, 1923 Patented Qct. 4, 1927.

llltlffEDA APA'`E`.I\VI` OFFICE@ RAYMOND CALM-iv, or EVERETT, ifrassaCnUsET-Ts, assiettes. To A. s. CAMPBELL CoM- raNY, CE EAST BosToN, MASSACHUSETTS, a Conrona'ron or MASSACHUSETTS.

CURTAT'N WINDOW.

Application filed April 14,

This invention pertains to improvements in curtain Windows; lt is among the objects f the invention to prvide a` e'urtain Winlmv having a frame adapted to be secured to the carrying fabric by prongs, While at the same time a pleasing appearance and a firm engagement are provided, an objectionable tearing of the fabric adjaeent the prongs'being eliminated.

ln the drawings, which show preferred forms of my invention:

Figure 1 shovvs a curtain Window assembled vvith its carrying fabric;

rig. e is a secties on the une se, sa a larger scale' andpartially broken away, beingvpa'rtly in elevation;

Figs. 3f, 4 and 5 are sections showing various stages of assembling the Window;

Figs. 6 and 7 shovv plan and side eleva tions of a section of afranie part prior to' assembly;

Fig. 8 is a section on the line 88 f Fig. 1, 'showing a preferred construction for relieving the curtain of the' Weight ofthe Windov7 by suspension means;

Fig. 9 is aV detail section of ay modified form of my invention;

Fig. lO' is a section through a frame, from which the' bead for securing the covering plate is omitted, being a somewhat 'cheaper' construction than Where such cover plate is provided for; and

Fig'. 11 is a fragmentary vieurv of the installation showing the formation of the prong-concealing' flange at the sides and at one` corner of the installation.

Referring to the drawings, I have shown (Fig. 2) a flexible carrier for the Window, herein typified by the curtain material 11 to Which are secured at its opposite sides frame elements secu'red together and to the fabric by prongs. The glass 13 is held betvve'en these frame elements, the oii'set pon tion 14 of one of the prong-receiving frame elements 1,5 providing a recess intol vhicli the glass fits, preferably cushioned by cushioningv means 16 which may be adhesive tape folded to fit the edge of the glass and preferably cemented to the adjacent frame land curtain material. Further cushioning of the glass is provided by the curtain material 11 adjacent the glass'-receivingA aperture, indeed, the curtain' material opposite the glass is prefs;J bll "t fr noved until after the' curtain installation is otherwise laas. semi No. $32,107.

completed, at which time a sharp knife may be guided along the' interior edge of the frame 17, 'cutting out the undesired curtain material and at the saine' time trimming off any p'reje'ctin'g edges of the adhesive tape or V60 other cushion 16.

VThe' frame 1'?, which provides the prongs l2 of which a great number are provided, preferably formed from a single sheet of metal, While providing afr'elatively extended 65 area to press against and liold firmly the 'curtain' material, and at the same time locatL ing the prongs 12 avery considerable distance from either edge of the frame. I a'ccomplish this by bending they material of Which the frame is n'iade double, preferably at both sides thereof to provide' nicely fur? rushed exterior and interior edges to are' finished frame, also increasing the strength thereof, and by previding the prongs intermediate the edgesv on the' interior surface of the frame, the prongs preferably struckfronr the material lying toward thelce'ritral portion of the sheet from which the frame isnrade. 'lhefranie 17 preferably also* pro- 80 vides one or more' stiflening ribs or beads, shown as single Figs. 2, 3', ll, 5 and 8 andl as double in Fig'. 10.l Where the material is to befolded over the prong-providing frame', as shown in Fig. 9 or Where the A`stifltlirring '85 rib is provided bythe prong-receiving frame, as shown in'Fig. 7 of my colpeiidingapplication filed herewith, the stillen g rib may be oinitted from the' pTong-proyiding frame. In any case, however, to obtain the Inst satisfactory grip of thel curtain Inaterial and glass, the prongs, 4While on the inl-1 terior of the frame 17, should be' suppdrted by the outer surface thereof to increasev the support of the prong, and to this end- Ili'ave 95 avoided locating' the vprongs'k 12 in a plane passingr through the hollow/`T portions of the stieni'ng rib behind it. The glas'sreceiving recess is shown as entirely Within the frame on the' side of the fabricfwhere the glass' is *100 located, insti-:fadV of entirely in the opposite frame,` or instead of partly i'n one frame' and partly in the other, this construction affording advantages in assembly and alee in af fording asup'erior grip' on the fabric. I 105 prefer, as shown", to' provide the prong on that frar'ne *'hicl'l is on' the opposite side of Lhe the glas`s though for sa. f be desirable the n." Yn'cati-an shown nl v equally satisfactory construction is shown in lil Fig. 10, wherein the bead 18 is provided only at the corners7 or rounds of the frame, the intermediate portions provided with flanges 19 adapted to be bent inwardly to conceal they prongs, and incidentally to stiifen the frame, the bending performed as a part ofthe assembly as indicated in Figs. 3 and t.

In Fig. 1, I have shown the window provided with three supporting straps 20, and in Fig. 9, I have shown a section through the point of connection of one of these straps to the frame, the strap 2O lying against the curtain material 11 and passing through a slot in the bead 18, being pierced and held by a prong 12.

Vhere-the separate cover plate is supplanted by the cover flange 19 as in Fig. 10, the prongs 12 yand the corresponding holes may be omitted adjacent the corners or rounds, so that no fastening means will be visible after the cover flange is bent and pressed into its final position.

There it is desired to replace a broken f glass, this may be done very easily pursuant to removal of the cover frame, or pursuant to bending up of the cover flange 19, as the case may be, this rendering accessible the "prongs 12, which may be straightened to permit disassembly, after which lassembly with the new glass is but a repetition of the original assembling operation.

While I have shown and described preferred forms of 'my invention, it will be understood that considerable changes may be made without departing from the scope of my invention, which is best defined in the following claims.

I`claiin- 1. A curtain window frame including two opposed parts adapted to receive between them a curtain and a glass, one of said frame parts presenting an extended substantially uninterrupted fiat surface in contact with the curtain material and presenting at points considerably removed from both edges thereof, a plurality of prongs each passing through the curtain material and the opposed frame part to clamp said frames against a substantial portion of said curtain, said one of said frame parts including a single sheet of metal having reversely bent opposite edges and said prongs projecting Vfrom said frame part between said edges.

2. A curtain window frame including two No. i

opposed parts adapted to receive between them a curtain and a glass, one of said frame parts present-ing an extended substantially uninterrupted flat surface in contact throughout substantially the entire width thereof with the curtain material and presenting at points considerably removed from both edges thereof, a plurality of prongs each passing through the curtain material and the opposedA frame part, said one of said frame parts formed of sheet metal having reversely bent flanges at its edges, said prongs projecting from the inside of the frame part adjacent to the free ends of the reversely bent flanges.

3. A curtain window frame including two opposed parts adapted to receive between them a curtain and a glass, one of said frame parts presenting an extended substantially uninterrupted flat surface in contact with the curtain material and presenting at points considerably removed from both edges thereof, a plurality of back-supported prongs each passing through the 4curtain material and the opposed frame part whereby to clamp the curtain between said extended surface and the opposed frame, said frame part providing said prongs also providing one or more stiffening ridges.

4t. A curtain window frame part present` ing a sheet of metal reversely bent from at least one edge to provide a double thickness, and a part presenting prongs projecting from the inner' portion of the frame part adi jacent the inner edge of the reversely bent portion, the outer' portion providing a hollow stiffening rib and said prongs out of line with the hollow in said rib so as to be back-supported by the outer portion of said frame part.

5. A curtain window installation including two opposed frame parts on opposite sides of the curtain fabric and the window glass, one of said frame parts having an extended surface in contact with the curtain Afabric substantially throughout its width and presenting prongs considerably removed from either edge thereof penetrating the curtain fabric and clenched over the opposed frame part thereby securely to grip the curjelement after the prongs have penetrated the curtain and the vseconntl-'mentioned frame element, 'and have been clenched base.

7. A curtain window part"presenting a glass-receiving offset fiange, a relatively flat curtain-engaging surface 'and 'an outer edge bent back on itself to conceal cooperating frame-securing elements, said bent baclr edge narrow adjacent the corners of the frame while of substantial width at the straight portion Aof the frame.

8. A curtain window part presenting a glass-receiving offset flange, a relatively flat curtain-engaging surface and an outer edge bent back on itself to conceal cooperating frame-securing elements, said bent back edge pre-formed and narrow adjacent the corner of the frame while bent during assembly and of substantial width at the straight portion of the frame.

9. A curtain window installation comprising a prong-providing frame and a prongreceiving Jframe, said prong-providing frame. presenting a relatively extended flat inner surface and formed of material deubled back on itself toA present a continuous exterior, the prongs projecting from said framev intermediate the edges, said prong-receiving frame presenting a glass-receiving offset, a relatively extended curtain-engaging portion perforated to admit passage therethrough of said prongs and having associated therewith bendable covering means for concealing said prongs pursuant to assembly with the curtain and the glass, the curtain material overlapping the glass at that side thereof adjacent the prong-providing frame.

10. A curtain window installation comprising a prong-providing frame and a prong-receiving frame, said prong-providing frame eXteriorly ribbed and presenting a relatively extended flat inner surface 'formed of material doubled back upon itself from each edge, and presenting a continuons eX- terior surface, the prongs being located at the edge of one of said doubled-back portions, said prong-receiving frame presenting a glass-receiving offset, a relatively extended curtain-engaging portion perforated to admit passage therethrough of said prongs and having associatedtherewith bendable flange means for concealing said prongs pursuant to assembly with the curtain and the glass.

11. A curtain window installation comprising` a pair of cooperating frame parts located on opposite sides of a curtain and window glass, one of said parts presenting a glass carrying seat and a relatively wide flange engaging the curtain, the other frame part presenting integral securing elements projecting through and bent against said flange to hold the frame parts in clamped relation to the. curtain and glass, the outer edge of said flange bent back over the exagainst said posed ends of said securing elements to pro duce a finished appearance.

l2. A curtain window installation compris-A ing a pair ofcooperating frames arranged on opposite sides of the curtain and window glass, each having a flat curtaingripping surfaceof substantial width bearing directly Y against ropposite sides of the curtain, Aone of said frames presenting a back-supported prong-presenting portion, the other frame perforated intermediate the edges of the curtain engaging surface to receive said prongs,

said prongs clenched over said perforated frame, said other frame having a flange bent down to conceal the exposed ends of said prongs after bending said prongs, thereby producing a finished appearance..

A curtain window installation comprising a pair of opposed sheet metal frame parts adapted to be secured to the curtain fabric and to grip a window therebetween, one of said parts presenting an outer strengthening bead between its edges and a relatively flat prong carrying portion eX- tending across the channel in said bead, prongs struck up from said portion and having their backs supported against the outer portion of said frame part adjacent the edge of the bead channel, the other frame part having a. curtain engaging surface opposite said first mentioned frame part and presentopenings to receive said prongs, said prongs clenched down over said frame part, and flange means associated with said other frame part to conceal the clenched down portions of said prongs and to strengthen said frame part.

14. A curtain window frame comprising a prong-providing portion and a prongreceiving portion, each presenting extended surfaces for gripping the curtain fabric therebetween, said prong-receiving portion presenting in cross-section a glass-overlying flange, a base flange presenting one of said extended surfaces, a glass-surrounding flange connecting said glass overlying flange and said base flange, and a prong-concealing flange bent inwardly from the outer edge of said base flange. j

15. A curtain window frame comprising a prong-providing portion andk a vprongreceiving portion, each presenting extended surfaces for gripping the curtain fabric, said prong-receiving portion presenting in cross section a glass-overlying flange, a glasssurrounding flange, a base flange presenting one of said extended surfaces and a prongl concealing flange bent inwardly from the outer edge of said base flange and terminating adjacent the junction of said glasssurrounding fla-nge and said base flange.

16. A frame portion for curtain window installations presenting a piece of metal turned back on itself at each side to present rounded edges, a relatively flat back-sup` ported interior surface and back-supported prongs projecting therefrom, and a plurality of strengthening beads on its exterior surface.

17. A :traine portion for curtain Wlndow installations presenting a piece of metal turned back on itself at each side to present rounded edges, a relatively flat interior surface and prongs projecting therefrom, and a plurality of strengthening beads on its l0 exterior surface, a flat portion between said beads overlying and hack-supporting theV bases of said prongs.

In testimony whereof, I have signed my name to this specification.

RAYMONDv CALPIN. y n 

